Answer to Question #350454 in Algebra for MrL

Question

Use any strategy to teach compensation concept of 453+96 to a grade five class. Explain the process in full

Answer 1

Solution:

Compensation is a mental math strategy for multi-digit addition that involves adjusting one of the addends to make the equation easier to solve.

So, let's start with given numbers.

953+96;

First we will try to find closesy friendly numbers. The friendly numbers are 10, 20, 30 and any number multiple by 10. So, 96 is close to 100=96+4; and 953 is close to 950=953-3;

We add 4 right number and from the left subtract by 3. So, we need just subtract by 1 from result. Now easy to add 950+100=1050.

1050-1=1049;

953+96=1049.